Add dualarch configuration

buildpack.toml

@@ -27,6 +27,14 @@ api = "0.7"
 type = "Apache-2.0"
 uri  = "https://github.com/paketo-buildpacks/executable-jar/blob/main/LICENSE"
 
+[[targets]]
+os = "linux"
+arch = "amd64"
+
+[[targets]]
+os = "linux"
+arch = "arm64"
+
 [[stacks]]
 id = "io.buildpacks.stacks.bionic"
 
@@ -50,4 +58,4 @@ build       = true
 
 [metadata]
 pre-package   = "scripts/build.sh"
-include-files = ["LICENSE", "NOTICE", "README.md", "bin/build", "bin/detect", "bin/main", "buildpack.toml"]
+include-files = ["LICENSE", "NOTICE", "README.md", "linux/amd64/bin/build", "linux/amd64/bin/detect", "linux/amd64/bin/main", "linux/arm64/bin/build", "linux/arm64/bin/detect", "linux/arm64/bin/main", "buildpack.toml"]

scripts/build.sh

@@ -2,15 +2,18 @@
 
 set -euo pipefail
 
-GOOS="linux" go build -ldflags='-s -w' -o bin/main github.com/paketo-buildpacks/executable-jar/v6/cmd/main
+GOOS="linux" go build -ldflags='-s -w' -o linux/amd64/bin/main github.com/paketo-buildpacks/executable-jar/v6/cmd/main
+GOOS="linux" GOARCH="arm64" go build -ldflags='-s -w' -o linux/arm64/bin/main github.com/paketo-buildpacks/executable-jar/v6/cmd/main
 
 if [ "${STRIP:-false}" != "false" ]; then
-  strip bin/main
+  strip linux/amd64/bin/main linux/arm64/bin/main
 fi
 
 if [ "${COMPRESS:-none}" != "none" ]; then
-  $COMPRESS bin/main
+  $COMPRESS linux/amd64/bin/main linux/arm64/bin/main
 fi
 
-ln -fs main bin/build
-ln -fs main bin/detect
+ln -fs main linux/amd64/bin/build
+ln -fs main linux/arm64/bin/build
+ln -fs main linux/amd64/bin/detect
+ln -fs main linux/arm64/bin/detect